3784400797664 has 24 divisors (see below), whose sum is σ = 7469306196408. Its totient is φ = 1887434144640.

The previous prime is 3784400797621. The next prime is 3784400797741. The reversal of 3784400797664 is 4667970044873.

It is a self number, because there is not a number n which added to its sum of digits gives 3784400797664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148932542 + ... + 148957949.

It is an arithmetic number, because the mean of its divisors is an integer number (311221091517).

Almost surely, 2^{3784400797664} is an apocalyptic number.

It is an amenable number.

3784400797664 is a deficient number, since it is larger than the sum of its proper divisors (3684905398744).

3784400797664 is a wasteful number, since it uses less digits than its factorization.

3784400797664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297890898 (or 297890890 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 65.

The spelling of 3784400797664 in words is "three trillion, seven hundred eighty-four billion, four hundred million, seven hundred ninety-seven thousand, six hundred sixty-four".